Octagon sink



FIG. 1 is a front perspective view;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a front elevation view of FIG. 1;

FIG. 4 is a rear elevation view of FIG. 1;

FIG. 5 is a left side elevation view of FIG. 1; and,

FIG. 6 is a right side elevation view of FIG. 1. 

The ornamental design for an octagon sink, as shown and described. 